Summary: this tutorial shows you how to use MySQL handler to handle exceptions or errors encountered in stored procedures. When an error occurs inside a stored procedure, it is important to handle it appropriately, such as continuing or exiting the c…

http://www.mysqltutorial.org/mysql-error-handling-in-stored-procedures/ mysql存储过程中的异常处理   定义异常捕获类型及处理方法: DECLARE handler_action HANDLER FOR condition_value [, condition_value] ... statement handler_action: CONTINUE | EXIT | UNDO condition_value: mysq…

This tutorial shows you how to use MySQL handler to handle exceptions or errors encountered in stored procedures. When an error occurs inside a stored procedure, it is important to handle it appropriately, such as continuing or exiting the current co…

MySQL的存储过程错误捕获方式和Oracle的有很大的不同. MySQL中可以使用DECLARE关键字来定义处理程序.其基本语法如下: DECLARE handler_type HANDLER FOR condition_value[,...] sp_statement handler_type: CONTINUE | EXIT condition_value: SQLSTATE [VALUE] sqlstate_value | condition_name | SQLWARNING | NO…

https://code.tutsplus.com/articles/an-introduction-to-stored-procedures-in-mysql-5--net-17843 MySQL 5 introduced a plethora of new features - stored procedures being one of the most significant. In this tutorial, we will focus on what they are, and h…

f you are not familiar with MySQL stored procedures or want to review it as a refresher, you can follow the MySQL stored procedures tutorial. We will create two stored procedures for the demonstration in this tutorial. The first stored procedure gets…

https://www.sitepoint.com/cursors-mysql-stored-procedures/ After my previous article on Stored Procedures was published on SitePoint, I received quite a number of comments. One of them suggested further elaboration on CURSOR, an important feature in…

Stored routines (procedures and functions) can be particularly useful in certain situations: When multiple client applications are written in different languages or work on different platforms, but need to perform the same database operations. When s…

MySql Error: Can't update table in stored function/trigger because it is already used by statement which invoked this stored function/trigger I am running a MySQL Query. But when a new row is added from form input I get this error: Error:Can't update…

Reference to: http://www.c-sharpcorner.com/UploadFile/skumaar_mca/good-practices-to-write-the-stored-procedures-in-sql-server/ Use proper indentation for the statements in SQL Server. It will improve the readability. Write the proper comments between…